CAN internal loop back mode

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CAN internal loop back mode

2,086 Views
veerajuvh619
Contributor III

Hi sir,

I am using s32k144 controller i need to perform Power on Built in Test(PBIT). To perform CAN test, how to configure internal loop back. After testing CAN Module should communicate with other controller.

Please help me.

Regards,

Veeraju V Hallikeri.

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2 Replies

1,156 Views
Sharath_NXP
Contributor I

Hello Sir

I using S32K148 and TJA1145_CAN_Transceiver .

Here when i send CAN ID 0x50 from Canalyzer , i'm getting an echo of same in CAN ID 0x601.

Sharath_NXP_1-1680790525276.png

 

i also checked that  FDCTRL[TDCEN] = 0 , yet i'm seeing the echo messages.

 

Kinldy help me stop this echo (0x601)

Best regards

Sharath 

 

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1,957 Views
lukaszadrapa
NXP TechSupport
NXP TechSupport

Hi,

there's LPB bit in CTRL1 register:

pastedImage_1.png

If you use SDK, you need to create new configuration and select loop back mode:

pastedImage_2.png

Regards,

Lukas